Elevator-door-actuating device.



ELEVATOR DOOR AC-TUATING DEVICE.

APPLiCTiON HLED APH. Si. MIG. Y

L. E. GRBOAT. l ELM/Mon 000B ACTUMING DEVICE.

APPLICATION FILED APR. I3, 9i6.

lilll lill @penile-ation ci? Letters latent.

Patented inne im timid...

` domination filed .april ti, itali. Serial No. nooitare used in ordinary types ot' building conlstruction. 1

The principal object of my invention is lo provide a device by which the doors of such an elevator canbe opened vand closed in a minimum of time, with a minimum of eilort, and a maximum of certainty. To accomplish this result certain new structure has been devised which will. be detail in theyfollowing specification.

ln the accompanying drawings,

Figure l is an elevation of a portion of a buliding showing an elevator car in an intermediate position between two floors, a portion oi? the building and the car being broken awavand shown in section to better illustrate the invention.

Fig. 2 is an elevation on an enlarged scale oi- -the door actuating device, a portion thereof' being shown in section.

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Fin'. 3 is n section on a plane represented bv the line .r3-m3 of Fig. 2, viewed in the direction oli the arrows.

Fig. 4 is a section on an enlarged scale on the line .m4- m4- oi5 Fig. 2. viewed in the direction oiC the arrows.

liief. :"i is a section through en interlock switch.

lling. (i is a viewof one form of solenoid brake which may be used in connection with the motor of the actuating),r device.

lligr. il is a diagram of connections.

Fig. 8 is a view on an enlarged scale the door operating lever and latch therefor.

' Fig. 9 is a View on a plane represented by' the line nig-m of Fig. 8 viewed in the direction of the arrows.-

ln the embodiment ot the invention shown in the drawings, an elevator' car ll may be actuated. ,through cables 12, or through hyset forth in dranlic mechanism not shown. lln the em-` bodiment illustrated, which shows an elec-- tric elevator, a main controller 13 is provided', this coijitroller being mounted in the car 11, and, having an operating handle it by which the elevator' operator controls the movements of the car. indoor controller 15 is mounted in a'convenient locaion in the elevator so that it can be readily manipulated. by the elevator operator. .dn inter lock switch 16 is mounted on the top oit the car, 'being adapted to en age an interlock cam l? placed in a suitab e location in the elevator shaft in which the car 11 runs. As ordinarily constructed the elevator car proper is without a door, a door lll-being titl' ith lill

` rovided at each ldoor. A door actuating ever 18 is provided for each of the doors 19, and a door actuating device 20 isl secured to the elevator car, this actuating device 2O being controlled by the door controller l5.

The door lever 18 is pivoted at 2l on a pin fixed in the structure surrounding the elevator shaft, this lever extending down and having a slot formed inthe lower` end thereoit' which engages a pm 22 fixed on a panel 23 oi the door 19, this door consisting of two panels 23 and 24 so connected that-the `panel 23 slides inside the panel 24, 4and the two panels thereafter move together behind n fixed panel 25. This construction heine;r already well known in theelevator art, and need not be described more in detail. 4

Pivot-ed on a pin 26, carried on the door operating,r lever 18 is a latch bar 29, this latch bar extendingover and having secured therein a pin 30, this pin carrying a rubber roller 3l which extends ont into the shaft of the car in such a position to be engaged by lill itil

the door actuating; device 20 as will hereinthe runner 3?, this latch engaging a notch i 38 cut inthe track 32 and extending over the 4roller 35 in such a position as to be lifted thereby as this roller slides in the' slot 3d.

lid

A spring 39, secured to the runner 33 eX- tendsover and tends to force the latch 36 into the notch 38.

The rubber roller 31 is so placed that it is adapted to be engaged by flaring jaws 40 carried on the door actuating device 20, these jaws 40 being secured to a traveling nut 41, this nut in turn sliding inside a case .a pin 51 carried on a lever 52, the lever 52 being carried on a pin 53 fixed in a bearing 54 which-is secured .to the case 42. A. hand brake 55v encircles the brake wheel 46, being secured at one end 56 to the pin 53, and being secured at the other end on a pin 57 carried on the end of the lever 52. This, and similar arrangements, of the brake are common-in the art and no novelty is claimed therefor.' The brake is provided so that whenever current lHows through the solenoid 49 the core 50 is lifted and the brake is released, the brake being immediately applied whenever current 1s cut oli from the solenoid 49. i

Sliding `:freely in the case 42 is a dash-pot rod 60, this rod being provided with a pis` ton 61 slicing freely in a dash-pot 62 secured to one end of the case 42, .this dashpot being, provided with cocks 63 by 4which the flow ,ot airior other fluid from one` end to the other thereof may be regulated. Secured to the rod 60-'are rdjustable stops 64 and 65, these stops being provided with set screws 66 by which they may be secured to therod 60 in any portion thereof, the stops 64 and 65 extending down into such a position that they are engaged at the end of the travel of the nut`41. Secured on the top of the case 42is an open limit switch 70, and a closed limit switch 7l, these limit switches being duplicates of each other, and consistin' of a case 72 in which an insulating slab 73 is mounted.4 A shaft 74 extends through the side of the case 72 and has an operating arm 75 rigidly mounted thereon. .Ar contact arm 76 is secured to the shaft 74 inside the case 72, and a spring 77 tends to hold the arms 75 'in the position illustrated in Fig. 2, the nut 41 striking against these arms 75 at either end of its travel and drawing them into the position shown in dotted. lines inFig. 2.

Wires 78, 79, 80 and 81 are secured to suitable terminals on the open limit switch 70, and wires 82, 83,84 and are secured to rest.

necesa? to similar terminals on the closed limit i switch 71, these wires being so connected to various contacts 86 inside these switches that connections will be made as will hereinafter be described.

The interlock switch 16 consists of a case 90 in which an insulating slab 91 is mounted. A shaft 92 projects through the side of the case 90, and carries an actuating lever 93 having a roller 94 in the extreme end thereof. A Contact arm 95 is normally held in its depressed condition by means of a spring 96 being thrown in the position shown in the drawing by the cam 17 so that contact is made between the arm 95 and a contact member97. Wires 98 and 99 are connected to the contact 97 and to the arm 95 respectively. Whenever the switch is closed by the roller 94 striking against the cam 17 the arm 95 strikes against the contact 97, thus completing an electrical connection between the wires 98 and 99.

The main controller 14 may be of any form, and a handle operating in a similar manner to the handle 14 may be used to control either an electric or hydraulic ele vator. For the purpose of making the operation plain the application to an electric elevator will be described, the parts of the controller being shown diagrammatically, the various types of controller suited to the purpose being well known at the resent time inthe art and therefore needing no detailed description.

ln the form shown diagrammatically, a pair of pivoted contact arms 100 and 101 are connected at their pivots through wires 102 and 103 with the armature 104 of the elevator driving motor, these arms 100 and 101 `being connected through an insulating bar 105 to the operating handle 14. Three contacts are provided, the outer ones being connected to a wire 108 and the center one to a wire 10T. By moving the handle 14 to the right the wire 102 is connected to thewirc 107 and the wire 103 to the wire 108. A reverse movement of the handle reverses these connections. l The wire 108 is connected through a wire 109 with a supply wire 110, the wire 108 also being connected to one sido of a shunt field 111 of the main motor of the elevator, the other terminal of the shunt iield 111 being connected through a wire 112 with the wire 85. Contacts 113 and 114 are suitably' lined in the stationary portion of the controller 13 in such a position that contact between them is closed by an insulated conductor on the operating handle 14 whenever this handle is in its oil` imsition` this occurring whenever the elevator is brought rlhe contact 113 is connected to the supply wire 1l() and the wire 114 is connected to the wire 99 loading to the interlock switch 16, the wire 98 of the interlock switch extending down ami being cwnneeiefi no the, Wires "Z9, 8l and 82. The Wim Y@ is mmmcted to i threshoid light 1.3.5, this, iigii; ming so placed that it illuminata@ th@ tineshoi of the car, the theifimiiiiiizii of iii@ iight being connecd thimigii :i Miceli@ with u main supply Win11?, die wires 11.0 and 117 having an @iectiiai pf wmf-iai impressed thereon from any suitzifiii Source.v The Wire 8i is :also connected. t@ iii@ wir@ 1l?. Vifhiis have iiiustizr-@d and des Scibed av mami;1 cnntl'niiaii; iirecisiy my 'ha main. controller 13, it 'is ciovious thai iiays miiy be Sad in he main circuits Wiifsmm" desired.

The door controlli@ l5 muy be @i my man veuint form, that biaiixg Shown matimiiy in thediinwings consisa of tw@ current carrying arms 19;() anni 1231. pivted on pins 1.522 and 123, und connected by :i bai 124 of inmiiating matiai s@ that Hwy musi move geher. A spiing tends to heid. 15h@ cmiiiroiier l5 in posiio-n to cios@ iii@ iifmig zmi means :we provifiefi by which' the opwatoi. may activite the controiie' eilifar 'by mimi or @tha-wise. '.i-hese mms :im adapta@ im rest mi. two of thm@ contacts, these, commis being comiected to the Wil-es 80, 84. ansi. 83, respectively. The Solenoid 49 is cmmeil 'iii eieries; with an armsiimre 15.216 Qi h@ mum?? i@ :across die pins X22 and X23, tim simili fieid X27 of rim moto .118 being coimieii across; 'hc supply wires il@ and 1W. @bviousiy in some cases a series mmm muy me useii. in. which crise the ieid li/37 is dispfmmii and. a series field is used, this fleici. bein@ v Series wih the wire 1%. H a, compound motor is used both fields wiii be usati. Tim meiwd fr? operation as ciiowsi ifi/ith iii@ nut Min its closed posiion, tin@ mit 41 wiil have contacefi 'with the; @pezifu ing 2mn T5 of the dosed iimii. switch Ti, drawing it imo thedotte position :is Shawn in iigg. EZ. The nut in Fig. 2 ira Siwwii. iaveiing in bimdieciiicm mi this :ii'iow in close 'the door ai :m instan@ juS inem@ iii :imi 75 of time iimir. switch 'Z'.i isi mwa@ rivm? 'io its dotted position. With the, arm in *Shir-i position. the partes wiii im in tim iioizioi. siimv'n in tim diagram in Fig. "i". fi. ighisg, pusiiioii there will be no iinw of cum-ahi @iimpt through the muni; {ieid 191i' @if iii@ mm'gmr iii. Vvhen in this posiimi. the iaiilg iiiws -i-O wiii. im in engagemni, with the iiibiim roim El. W'ith the parts in this iwsiizimi.. ii" ii, irs deSiied tf open iii@ (imm, timnp/eiz *iii* moves the door switch i5 in such ai, num as bocinas@ the um to mak@ minimi: miie Wire 8U, and the min 1.2i 'im mak@ zii`- met with the wire and theme@ Wilii'i. iii@ wires 84'- nd lil/'. No current Wiii iiuii miiess the switch i6 is ci mii., anni this @#wiivi'i. wiii never be ciosed except Wham @im @iiivatmis in the proper pusitim en iiiw @im Ciiij 15]? E50 aim@ it. this 'posiifm hazing @hat in iii fissi 01 die wir '1.1. .is appwx i with. mi@ @if iin?. iiims 011i iii@ mi/'m1 M; must Quiso be in. its i3-ii pesifaion. "iiiiieii in this 1in iviii Huw through the Wim e @minci- 113, 'the M5 ami through the Wim 995 anni 35g izmnfacb 977 ami the 'Wife wir@ -fiugii 'this wir@ ill ik@ oz iii@ switch 701, ami. m 'wim Sii, and iom this, wir@ tiiimlgii. tim .U im sovieimid m16. L0 the. :miimf 236 mi tim. door actuating motor 48 ici'iffing 751mm iii@ armsime 1% i iii@ zum .1.21 im ihe Wire 125, miti .i tim win?, im the wither 15m-mimi Ui? iie eiicui. This wiii iesuit in siuienid iiwim i9 ieieasingg. allowing i @Hummm 126 i0 i'mn th shaft 1:3V in fm1 as to actuate the nut i1 in i. Sgh/e, arm

MS@ mmf@ tim iziwsli which in @Damon angagiiig this rubber -rollei Sii, 'this iubii-sii miie? 31 Siidingg in tbe''irectioii 'die :www i', 0i." 8,9 the mile? 35 i ding; in the Sioz 3%, :1mi ii'fting thd'izibch u@ olf h@ mitch. E@ S0 that the Y'Jmie im?, $.30 siifie. den@ iii@ @zich 32 in die fiiifecifm @if the Mirow 'll t'n open the Cioni. This mow@ c; Fiom.' ievei "i8 viiixmlgii th@ if. causing; the 600i' tti ope/n. The 'wf iii@ diam. i5; m'rssteoi'bv the nui; ii against if?. which actuites A iig s. retmd'iiig insana sm s@ imi', it wiii tuoi.- siam. A1; the same 'mit 4.1 strikes against the firm Z5 iififreiii out of the position shown fr am., in Fig. Y, and

me Cilmiii between fixe, Wires 80 and.

. :ni ii Hi" eiiiiiggimzi? iighizing up the, hresiioi. wif tim parts im ihm position. it ia impufm siiizcii. T0, moving 1th@ moving [iii MMD

n isiud tim current 430 the motoi iS ini/fair Sil escoger ing Contact 7 6 of the switch 71 being in the position shown in dotted lines, and the moving contact Z6 of the switch 70 being also in the position shown in dotted lines. TVith the parts in this position, current Hows thi-ou h the Wires 82 and 83, and through the Wires 125, 84- and 117, to supply current to the armature 126 in a reverse direction to that previously explained and to release the brake, so that the motor turns in the reverse direction, moving the nut 41 in the direction shown by the arrow 15G in Fig. 2. As soon as the nut 41 starts in this travel the switch assumes the position shown in full lines in the drawing, thus shutting ofi the threshold lights, and this travel continues until the switch 71 is actuated and thrown in the position shown in full lines in the diagram, thus interrupting the current to the armature 126 and allowing the solenoid 49 to apply the brake. At the same time the stop 65 is struck and the piston 6l. assists in stopping the mechanism without jar.

With the parts in the'. position shown in full lines in the diagram it is possible to apply current to the armature 104 in either direction, the' circuit to the wire 107 being closed thpongh the wire 85, the limit switch 71, the wire 84, and the wire 117, theother side of the circuit being supplied through the wires and 109. The actuation of the controller 13 in either direction will enable .the operator to run the elevator either up or down at will..

lt is, of course, understood that this rcverse actuation of the nut 41 just described closes the doors 23 and 24 through the rubber roller 31, the bar 29, the lever 18, and their connected arts, the doors heingloclied in their close L position by the latch 36 fallin into the notch 38 on the track 32. it wil thus be seen that the elevator operator is Jfree to operate the elevator in eitl'xe direction so long as the nut 41 is in the closed position, or in a position to the extreme right as viewed in Fig. 2. lt is further evident that the operator is una-ble to actuate the door operating mechanism 20 whenever the vlever 14 is in any other position than the center, inasmuch as the circuit to the motor 48 is broken between the contacts 113 and 114 except when the lever 14 is in the central, or ed position, and this opening of the circuit prevents current lacing supplied to the armature 126 of the motor 48. lt is further evident that with thc arm 14 in its center position the operator can only actuate the mechanism 20 when the interlock switch 16 is closed by the cam as the circuit is open between wires 98 and 59 at all times, the circuit lacing open at all other times so that no other current can be supplied to the armature 126. ln other Words the door mechanism 20 can only be energized when the car is approximately level with the floor.

lt will further be evident that as soon as the door actuating mechanism 20 is moved, from the closed position that it is impossible to actuate the car through the controller 1.3, duc to the :tact that the main circuit ot the motor is opened between the wires 84 and acting piston in said dash-pot secured to said rod, and stops on said rod for engaging; said nutat either limit of its travel.

2. ln a door actuating evice, a sliding nut, means on said nut for engaging; the door to be actuated, a screw for driving said nut, a door actuating motor for driving said screw, means whereby said nut interrupts the circuit of said motor at either end of said nuts travel, a solenoid brake on said screw, means by which said brake is applied whenever the circuit to said motor is interrupted, a. dash-pot rod arranged in parallel relation to said screw, a dash-pot, a double acting piston in said dash-pot secured to said rod, and stops on said rod for engaging said nut at either limit of its travel.

3. ln an elevator, a driving; motor, a cer, means hy which said motor crives said car, a main controller, a door on each door, door aetuatin means carried on said car, means carried y said door actuating means for opening and closingsaiddoors, a series of in terlock cams secured 'to the walls oi? the elevator shaft in which said car travels, an iuterloclr switch carried by' said car and so placed as to be closed by said interlock cams, means by which said door actuating means is inoperative at all times except when said interlock switch is closed, a main controller by which said driving motor is mntrollcd,

and means in said main controller for preventing the operation of said door actuating; device except when said controller is in a position to open the circuit to said driving motor.

4. in an elevator, a driving motor, a car, means hy which. said motor drives said our, a main controller, a door on each door, door actuating mea-ns carried. on said car, means carried hy said. door actuating means for openingl and closing said doors, a series ci". interlock cams secured to the walls of; the elevator shaft in which said car travels, an

interlock switch carried' by said car and so interlock switch is closcd, nu interlock switch 1n the c1rcu1t ol-v smcl flrlvmg motor, mcadns for opening said switch Whcnevcr the, door 1sl cpcn, a mam controller by which Saud dmv- `ing' motor is controlled, and means in saicl 

